WSP00945

• File Number: 8442.400
• Description: Missouri Basin - Pick Sloan Project - Reports
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 2/28/1985
• Author: DoI, BoR
• Title: Lake Andes - Wagner Unit Planning Report / draft Enviromental Statement
• Water Supply Pro - Doc Type: Report/Study

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SUMMARY TABLE (cont'd)
Lake Andes-Wagner Unit

The diversion of water for the project will have no significant impact
on Lake Francis Case or the Missouri River. Project return flows would
not alter the water quality of the Missouri River. During the irriga-
tion season, project return flows would not significantly alter the
water quality of Choteau Creek. During the low historical winter
flows, total dissolved concent~ations will increase and potentially
exceed the State Water Quality Standard, but will not affect aquatic
life. Data collection is continuing to determine the effect of return
flows on Lake Andes. Dilution water could be provided to the lake via
controlled turnouts if studies show water quality will degrade.

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There are five archeological sites in the project area which are poten-
tially eligible for the Nation~l Register. These should not be adver-
sely ~ffected by the project f~cilities. Evaluation prior to
construction is recommended. One possible grave site will be affected
by canal construction.

Social Account:
The project will have posItIve social effects through increased
employment and personal income and a slowing or slight reversal of out-
migration, for both the project area and region in general and the
Yankton Sioux Indians in particular. Some negative impact will occur
to those people whose lands will be severed by project canals but will
not receive water from the project.

S-i~